* Cows: This is a noun, so we'll look for other words for cattle.
* Synonyms: bovine, cattle, heifers, steers
* Small drum: This refers to a musical instrument.
* Synonyms: tambourine, snare drum, timpani (if you mean a large drum)
* Skill: This is a noun referring to proficiency in a specific area.
* Synonyms: ability, talent, expertise, mastery
* Keel over: This is a verb meaning to faint or collapse suddenly.
* Synonyms: pass out, swoon, collapse, fall unconscious
It's important to note that the context of the phrase is unclear. If you can provide more information about what you're trying to describe, I can give you more precise synonyms.